The robbery was reported about 9 p.m. on Jamacha Boulevard near Arapaho Street in Spring Valley. Two pedestrians were robbed of a cellphone and watch, sheriff’s Lt. Clayton Lisk said.

Sheriff’s deputies pursued a white Ford Thunderbird to La Mesa. A shotgun was tossed from the fleeing car during the pursuit. Authorities lost the car at one point, but a citizen later reported seeing the suspects near a Sprouts Farmers Market on Palm Avenue, near Fresno Avenue.

A man and a woman were located and arrested, Lisk said. Shortly afterward, another man was arrested, La Mesa police said. Their names were not released.

La Mesa police and the California Highway Patrol assisted deputies in the search, along with a San Diego police helicopter and a sheriff’s helicopter.